Invention Grant
US08440823B2 Process for the preparation of erlotinib or its pharmaceutically acceptable salts thereof 失效
厄洛替尼或其药学上可接受的盐的制备方法

Process for the preparation of erlotinib or its pharmaceutically acceptable salts thereof
Abstract:
The present invention relates to a process for preparation of erlotinib of Formula I or its pharmaceutically acceptable salt thereof. The present invention also relates to process for the preparation of erlotinib trifluoroacetate. The present invention also relates to a nove-ICrystalline form of erlotinib trifluoroacetate designated as Form E and process for its preparation. The present invention further relates to process for the preparation of erlotinib hydrochloride from erlotinib trifluoroacetate.
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